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S-1165 Series
www.sii-ic.com
© Seiko Instruments Inc., 2002-2015
HIGH RIPPLE-REJECTION LOW DROPOUT
CMOS VOLTAGE REGULATOR
Rev.4.1_00
The S-1165 Series is a positive voltage regulator with a low dropout voltage, high-accuracy output voltage, and
low current consumption developed based on CMOS technology.
A built-in low on-resistance transistor provides a low dropout voltage and large output current, and a built-in
overcurrent protection circuit prevents the load current from exceeding the current capacity of the output
transistor. An ON/OFF circuit ensures a long battery life, and a small SOT-23-5 package realizes high-density
mounting.
Features
Output voltage:
Output voltage accuracy:
Dropout voltage:
Current consumption:
Output current:
Ripple rejection:
Built-in overcurrent protection circuit:
Built-in ON/OFF circuit:
Operation temperature range:
Lead-free, Sn 100%, halogen-free*2
1.5 V to 5.5 V, selectable in 0.1 V step
±1.0%
140 mV typ. (3.0 V output product, IOUT = 200 mA)
During operation: 35 μA typ., 65 μA max.
During power-off: 0.1 μA typ., 1.0 μA max.
Possible to output 200 mA (VIN VOUT(S) + 1.0 V)*1
70 dB typ. (f = 1.0 kHz)
Limits overcurrent of output transistor.
Ensures long battery life.
Ta = 40°C to +85°C
*1. Attention should be paid to the power dissipation of the package when the output current is large.
*2. Refer to “Product Name Structure” for details.
Applications
Constant-voltage power supply for battery-powered device
Constant-voltage power supply for personal communication device
Constant-voltage power supply for home electric/electronic appliance
Constant-voltage power supply for cellular phone
Package
SOT-23-5
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HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1165 Series
Rev.4.1_00
Block Diagram
VIN
*1
VOUT
Overcurrent
protection circuit
ON/OFF
ON/OFF
circuit
+
Reference
voltage circuit
VSS
*1. Parasitic diode
Figure 1
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HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.4.1_00
S-1165 Series
Product Name Structure
Users can select the product type, output voltage for the S-1165 Series. Refer to “1. Product name
regarding the contents of product name, “2. Package” regarding the package drawings and “3.
Product name list” regarding details of the product name.
1. Product name
S-1165 x xx MC - xxx TF x
Environmental code
U: Lead-free (Sn 100%), halogen-free
G: Lead-free (for details, please contact our sales office)
IC direction in tape specifications*1
Product name (abbreviation)*2
Package name (abbreviation)
MC: SOT-23-5
Output voltage
15 to 55
(e.g., when the output voltage is 1.5 V, it is expressed
as 15.)
Product type*3
A: ON/OFF pin negative logic
B: ON/OFF pin positive logic
1. Refer to the tape drawing.
2. Refer to the “Product name list”.
3. Refer to “3. ON/OFF pin” in “Operation”.
2. Package
Package Name
SOT-23-5
Package
MP005-A-P-SD
Drawing Code
Tape
MP005-A-C-SD
Reel
MP005-A-R-SD
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HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1165 Series
Rev.4.1_00
3. Product name list
Table 1
Output Voltage
Product Name
1.5V±1.0%
S-1165B15MC-N6ATFx
1.6V±1.0%
S-1165B16MC-N6BTFx
1.7V±1.0%
S-1165B17MC-N6CTFx
1.8V±1.0%
S-1165B18MC-N6DTFx
1.9V±1.0%
S-1165B19MC-N6ETFx
2.0V±1.0%
S-1165B20MC-N6FTFx
2.1V±1.0%
S-1165B21MC-N6GTFx
2.2V±1.0%
S-1165B22MC-N6HTFx
2.3V±1.0%
S-1165B23MC-N6ITFx
2.4V±1.0%
S-1165B24MC-N6JTFx
2.5V±1.0%
S-1165B25MC-N6KTFx
2.6V±1.0%
S-1165B26MC-N6LTFx
2.7V±1.0%
S-1165B27MC-N6MTFx
2.8V±1.0%
S-1165B28MC-N6NTFx
2.9V±1.0%
S-1165B29MC-N6OTFx
3.0V±1.0%
S-1165B30MC-N6PTFx
3.1V±1.0%
S-1165B31MC-N6QTFx
3.2V±1.0%
S-1165B32MC-N6RTFx
3.3V±1.0%
S-1165B33MC-N6STFx
3.4V±1.0%
S-1165B34MC-N6TTFx
3.5V±1.0%
S-1165B35MC-N6UTFx
3.6V±1.0%
S-1165B36MC-N6VTFx
3.7V±1.0%
S-1165B37MC-N6WTFx
3.8V±1.0%
S-1165B38MC-N6XTFx
3.9V±1.0%
S-1165B39MC-N6YTFx
4.0V±1.0%
S-1165B40MC-N6ZTFx
4.1V±1.0%
S-1165B41MC-N7ATFx
4.2V±1.0%
S-1165B42MC-N7BTFx
4.3V±1.0%
S-1165B43MC-N7CTFx
4.4V±1.0%
S-1165B44MC-N7DTFx
4.5V±1.0%
S-1165B45MC-N7ETFx
4.6V±1.0%
S-1165B46MC-N7FTFx
4.7V±1.0%
S-1165B47MC-N7GTFx
4.8V±1.0%
S-1165B48MC-N7HTFx
4.9V±1.0%
S-1165B49MC-N7ITFx
5.0V±1.0%
S-1165B50MC-N7JTFx
5.1V±1.0%
S-1165B51MC-N7KTFx
5.2V±1.0%
S-1165B52MC-N7LTFx
5.3V±1.0%
S-1165B53MC-N7MTFx
5.4V±1.0%
S-1165B54MC-N7NTFx
5.5V±1.0%
S-1165B55MC-N7OTFx
Remark 1. Please contact our sales office for type A products.
2. x: G or U
3. Please select products of environmental code = U for Sn 100%,
halogen-free products.
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HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.4.1_00
S-1165 Series
Pin Configuration
SOT-23-5
Top view
54
123
Pin No.
1
2
3
4
5
Symbol
VIN
VSS
ON/OFF
NC*1
VOUT
Table 2
Description
Input voltage pin
GND pin
ON/OFF pin
No connection
Output voltage pin
*1. The NC pin is electrically open.
The NC pin can be connected to VIN pin or VSS pin.
Figure 2
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HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1165 Series
Rev.4.1_00
Absolute Maximum Ratings
Table 3
(Ta = 25°C unless otherwise specified)
Item
Symbol
Absolute Maximum Rating
Unit
Input voltage
Output voltage
Power dissipation
VIN
VON/OFF
VOUT
PD
VSS 0.3 to VSS + 7
VSS 0.3 to VIN + 0.3
VSS 0.3 to VIN + 0.3
300 (When not mounted on board)
600*1
V
mW
mW
Operation ambient temperature
Storage temperature
*1. When mounted on board
Topr
Tstg
40 to +85
40 to +125
°C
[Mounted on board]
(1) Board size : 114.3 mm × 76.2 mm × t1.6 mm
(2) Board name : JEDEC STANDARD51-7
Caution The absolute maximum ratings are rated values exceeding which the product could suffer
physical damage. These values must therefore not be exceeded under any conditions.
700
600
500
400
300
200
100
Figure 3
0
0
50 100 150
Ambient Temperature (Ta) [°C]
Power Dissipation of Package (When Mounted on Board)
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HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.4.1_00
S-1165 Series
Electrical Characteristics
Item
Output voltage*1
Output current*2
Dropout voltage*3
Line regulation
Load regulation
Output voltage
temperature coefficient*4
Current consumption
during operation
Current consumption
during power-off
Input voltage
ON/OFF pin
input voltage “H”
ON/OFF pin
input voltage “L”
ON/OFF pin
input current “H”
ON/OFF pin
input current “L”
Ripple rejection
Short-circuit current
Table 4
(Ta = 25°C unless otherwise specified)
Symbol
Conditions
Min.
Typ.
Max.
Unit
Test
Circuit
VOUT(E) VIN = VOUT(S) + 1.0 V, IOUT = 30 mA
IOUT
VIN VOUT(S) + 1.0 V
Vdrop
IOUT = 200 mA
1.5 V VOUT(S) 2.5 V
2.6 V VOUT(S) 5.5 V
ΔVOUT1 VOUT(S) + 0.5 V VIN 6.5 V,
ΔVINVOUT IOUT = 30 mA
ΔVOUT2
VIN = VOUT(S) + 1.0 V,
1.0 mA IOUT 200 mA
ΔVOUT VIN = VOUT(S) + 1.0 V, IOUT = 30 mA,
ΔTaVOUT 40°C Ta 85°C
VOUT(S)
× 0.99
200*5
VOUT(S)
0.20
0.14
VOUT(S)
× 1.01
0.30
0.20
V
mA
V
0.05 0.2 %/V
20 40 mV
±100
ppm/°
C
1
3
1
ISS1
VIN = VOUT(S) + 1.0 V, ON/OFF pin = ON,
no load
35
65 μA 2
ISS2
VIN = VOUT(S) + 1.0 V, ON/OFF pin = OFF,
no load
0.1 1.0
VIN 2.0 6.5 V
VSH VIN = VOUT(S) + 1.0 V, RL = 1.0 kΩ
1.5 ⎯ ⎯
4
VSL VIN = VOUT(S) + 1.0 V, RL = 1.0 kΩ
⎯ ⎯ 0.3
ISH VIN = 6.5 V, VON/OFF = 6.5 V
0.1 0.1 μA
ISL VIN = 6.5 V, VON/OFF = 0 V
0.1 0.1
RR VIN = VOUT(S) + 1.0 V, f = 1.0 kHz,
ΔVrip = 0.5 Vrms, IOUT = 30 mA
70 dB 5
Ishort
VIN = VOUT(S) + 1.0 V, ON/OFF pin = ON,
VOUT = 0 V
350 mA 3
*1. VOUT(S): Set output voltage
VOUT(E): Actual output voltage
Output voltage when fixing IOUT(= 30 mA) and inputting VOUT(S) + 1.0 V
*2. The output current at which the output voltage becomes 95% of VOUT(E) after gradually increasing the output
current.
*3. Vdrop = VIN1 (VOUT3 × 0.98)
VOUT3 is the output voltage when VIN = VOUT(S) + 1.0 V and IOUT = 200 mA.
VIN1 is the input voltage at which the output voltage becomes 98% of VOUT3 after gradually decreasing
the input voltage.
*4. A change in the temperature of the output voltage [mV/°C] is calculated using the following equation.
ΔVOUT
ΔTa
[mV/°C]*1 = VOUT(S) [V]*2 ×
ΔVOUT
ΔTa VOUT
[ppm/°C]*3 ÷ 1000
*1. Change in temperature of output voltage
*2. Set output voltage
*3. Output voltage temperature coefficient
*5. The output current can be at least this value.
Due to restrictions on the package power dissipation, this value may not be satisfied. Attention should be
paid to the power dissipation of the package when the output current is large.
This specification is guaranteed by design.
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HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1165 Series
Rev.4.1_00
Test Circuits
1.
VIN VOUT
ON/OFF VSS
Set to ON
+A
+
V
Figure 4
2.
A VIN
VOUT
ON/OFF
VSS
Set to
VIN or GND
Figure 5
3.
VIN VOUT
+
A
ON/OFF VSS
Set to ON
+
V
Figure 6
4.
VIN VOUT
+
A ON/OFF
VSS
+
V RL
Figure 7
5.
VIN VOUT
ON/OFF VSS
Set to ON
+
V RL
Figure 8
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HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.4.1_00
S-1165 Series
Standard Circuit
Input
CIN*1
VIN VOUT
ON/OFF
VSS
Output
CL*2
Single GND
GND
*1. CIN is a capacitor for stabilizing the input.
*2. A tantalum capacitor (2.2 μF or more) can be used.
Figure 9
Caution The above connection diagram and constant will not guarantee successful operation.
Perform thorough evaluation using the actual application to set the constant.
Condition of Application
Input capacitor (CIN): 1.0 μF or more
Output capacitor (CL): 2.2 μF or more (tantalum capacitor)
Caution Generally a series regulator may cause oscillation, depending on the selection of external
parts. Check that no oscillation occurs with the application using the above capacitor.
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HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1165 Series
Rev.4.1_00
Explanation of Terms
1. Low dropout voltage regulator
This voltage regulator has the low dropout voltage due to its built-in low on-resistance transistor.
2. Output voltage (VOUT)
The accuracy of the output voltage is ensured at ±1.0% under the specified conditions of fixed input
voltage*1, fixed output current, and fixed temperature.
*1. Differs depending the product.
Caution If the above conditions change, the output voltage value may vary and exceed the
accuracy range of the output voltage. Refer to "Electrical Characteristics" and "
Characteristics (Typical Data)" for details.
3. Line regulation
ΔVOUT1
ΔVIN VOUT
Indicates the dependency of the output voltage on the input voltage. That is, the value shows how
much the output voltage changes due to a change in the input voltage with the output current remaining
unchanged.
4. Load regulation (ΔVOUT2)
Indicates the dependency of the output voltage on the output current. That is, the value shows how
much the output voltage changes due to a change in the output current with the input voltage remaining
unchanged.
5. Dropout voltage (Vdrop)
Indicates the difference between input voltage (VIN1) and the output voltage when; decreasing input
voltage (VIN) gradually until the output voltage has dropped out to the value of 98% of output voltage
(VOUT3), which is at VIN = VOUT(S) + 1.0 V.
Vdrop = VIN1 (VOUT3 × 0.98)
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HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.4.1_00
S-1165 Series
6. Output voltage temperature coefficient
ΔVOUT
ΔTa VOUT
The shaded area in Figure 10 is the range where VOUT varies in the operation temperature range when
the output voltage temperature coefficient is ±100 ppm/°C.
Example of S-1165B28 typ. product
VOUT
[V]
+0.28 mV/°C
VOUT(E)*1
0.28 mV/°C
40 +25 +85 Ta [°C]
*1. VOUT(E) is the value of the output voltage measured at Ta = +25°C.
Figure 10
A change in the temperature of the output voltage [mV/°C] is calculated using the following equation.
ΔVOUT
ΔTa
[mV/°C]*1 = VOUT(S) [V]*2 ×
ΔVOUT
ΔTa VOUT
[ppm/°C]*3 ÷ 1000
*1. Change in temperature of output voltage
*2. Set output voltage
*3. Output voltage temperature coefficient
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HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1165 Series
Rev.4.1_00
Operation
1. Basic operation
Figure 11 shows the block diagram of the S-1165 Series.
The error amplifier compares the reference voltage (Vref) with feedback voltage (Vfb), which is the output
voltage resistance-divided by feedback resistors (Rs and Rf). It supplies the gate voltage necessary to
maintain the constant output voltage which is not influenced by the input voltage and temperature
change, to the output transistor.
VIN
Current
supply
Vref
Error
amplifier
+
Reference voltage
circuit
*1
Rf
Vfb
Rs
VOUT
VSS
*1. Parasitic diode
Figure 11
2. Output transistor
In the S-1165 Series, a low on-resistance P-channel MOS FET is used as the output transistor.
Be sure that VOUT does not exceed VIN + 0.3 V to prevent the voltage regulator from being damaged due
to reverse current flowing from the VOUT pin through a parasitic diode to the VIN pin, when the potential
of VOUT became higher than VIN.
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HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.4.1_00
S-1165 Series
3. ON/OFF pin
This pin starts and stops the regulator.
When the ON/OFF pin is set to OFF level, the entire internal circuit stops operating, and the built-in P-
channel MOS FET output transistor between the VIN pin and the VOUT pin is turned off, reducing current
consumption significantly. The VOUT pin becomes the Vss level due to the internally divided resistance
of several hundreds kΩ between the VOUT pin and the VSS pin.
The structure of the ON/OFF pin is as shown in Figure 12. Since the ON/OFF pin is neither pulled
down nor pulled up internally, do not use it in the floating status. In addition, note that the current
consumption increases if a voltage of 0.3 V to VIN – 0.3 V is applied to the ON/OFF pin. When not using
the ON/OFF pin, connect it to the VSS pin in the product A type, connect it to the VIN pin in B type.
Table 5
Product Type
A
A
B
B
ON/OFF Pin
“L”: ON
“H”: OFF
“L”: OFF
“H”: ON
Internal Circuit
Operate
Stop
Stop
Operate
VOUT Pin Voltage
Set value
VSS level
VSS level
Set value
Current Consumption
ISS1
ISS2
ISS2
ISS1
VIN
ON/OFF
VSS
Figure 12
Selection of Output Capacitor (CL)
The S-1165 Series performs phase compensation using the internal phase compensator in the IC and the
ESR (Equivalent Series Resistance) of the output capacitor to enable stable operation independent of
changes in the output load. Therefore, always place a capacitor (CL) of 2.2 μF or more between the
VOUT pin and the VSS pin.
For stable operation of the S-1165 Series, it is essential to employ a capacitor whose ESR is within an
optimum range. Using a capacitor whose ESR is outside the optimum range (approximately 0.5 Ω to
5 Ω), whether larger or smaller, may cause an unstable output, resulting in oscillation. For this reason, a
tantalum electrolytic capacitor is recommended.
When a ceramic capacitor or an OS capacitor with a low ESR is used, it is necessary to connect an
additional resistor that serves as the ESR in series with the output capacitor. The required resistance
value is approximately 0.5 Ω to 5 Ω, which varies depending on the usage conditions, so perform sufficient
evaluation for selection. Ordinarily, around 1.0 Ω is recommended.
Note that an aluminum electrolytic capacitor may increase the ESR at a low temperature, causing
oscillation. When using this kind of capacitor, perform thorough evaluation, including evaluation of
temperature characteristics.
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HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1165 Series
Rev.4.1_00
Precautions
Wiring patterns for the VIN pin, the VOUT pin and GND should be designed so that the impedance is
low. When mounting an output capacitor between the VOUT pin and the VSS pin (CL) and a capacitor
for stabilizing the input between the VIN pin and the VSS pin (CIN), the distance from the capacitors to
these pins should be as short as possible.
Note that generally the output voltage may increase when a series regulator is used at low load current
(1.0 mA or less).
The S-1165 Series performs phase compensation by using an internal phase compensator and the ESR
of an output capacitor. Therefore, always place a capacitor of 2.2 μF or more between VOUT and VSS
pins. A tantalum type capacitor is recommended. Moreover, to secure stable operation of the S-1165
Series, it is necessary to employ a capacitor with an ESR within an optimum range (0.5 Ω to 5 Ω).
Using a capacitor whose ESR is outside the optimum range (approximately 0.5 Ω to 5 Ω), whether larger
or smaller, may cause an unstable output, resulting in oscillation. Perform sufficient evaluation under
the actual usage conditions for selection, including evaluation of temperature characteristics.
The voltage regulator may oscillate when the impedance of the power supply is high and the input
capacitance is small or an input capacitor is not connected.
Overshoot may occur in the output voltage momentarily if the voltage is rapidly raised at power-on or
when the power supply fluctuates. Sufficiently evaluate the output voltage at power-on with the actual
device.
The application conditions for the input voltage, the output voltage, and the load current should not
exceed the package power dissipation.
Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in
electrostatic protection circuit.
In determining the output current, attention should be paid to the output current value specified in Table
4 in “Electrical Characteristics” and footnote *5 of the table.
SII claims no responsibility for any disputes arising out of or in connection with any infringement by
products including this IC of patents owned by a third party.
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HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.4.1_00
S-1165 Series
Characteristics (Typical Data)
(1) Output voltage vs. Output current (when load current increases)
S-1165B15 (Ta = 25°C)
S-1165B30 (Ta = 25°C)
2.5
2
1.5
1 VIN = 1.8 V
6.0 V
0.5
0
0 200
400
2.5 V
600 800
4
3.5
3
2.5
2
1.5
1
0.5
0
0
VIN = 3.3 V
6.0 V
200 400
IOUT [mA]
IOUT [mA]
4.0 V
600 800
S-1165B50 (Ta = 25°C)
6
5
4
3
2
1
0
0 200 400
IOUT [mA]
6.0 V
VIN = 5.3 V
600 800
Remark In determining the output current, attention
should be paid to the following.
1) The minimum output current value and
footnote *5 of Table 4 in the “Electrical
Characteristics
2) The package power dissipation
(2) Output voltage vs. Input voltage
S-1165B15 (Ta = 25°C)
1.6
1.55
30 mA
1.5
IOUT = 1mA
1.45 50 mA
1.4
1
1.5
VIN [V]
2
2.5
S-1165B30 (Ta = 25°C)
3.05
3
2.95
2.9
50 mA
IOUT = 1mA
2.85 30 mA
2.8
2.5
3
VIN [V]
3.5
4
S-1165B50 (Ta = 25°C)
5.1
5.08
5.06
5.04
5.02
5
4.98
4.96
4.94
4.92
4.5
5
VIN [V]
IOUT = 1mA
50 mA
30 mA
5.5 6
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HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1165 Series
Rev.4.1_00
(3) Dropout voltage vs. Output current
S-1165B15
0.35
0.3
0.25
0.2
0.15
0.1
0.05
0
0
85°C
25°C
40°C
50 100 150 200 250
IOUT [mA]
S-1165B50
0.16
0.14
0.12
0.1
0.08
0.06
0.04
0.02
0
0
85°C
25°C
40°C
50 100 150 200 250
IOUT [mA]
(4) Dropout voltage vs. Set output voltage
300
200 mA
250
200
150 120 mA
50 mA
100
30 mA
50
10 mA
0
0 12 345 67
VOUT(S) [V]
S-1165B30
0.2
0.18
0.16
0.14
0.12
0.1
0.08
0.06
0.04
0.02
0
0
85°C
25°C
40°C
50 100 150 200 250
IOUT [mA]
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HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.4.1_00
S-1165 Series
(5) Output voltage vs. Ambient temperature
S-1165B15
1.6
1.55
1.5
1.45
1.4
-40 -20 0 20 40 60 80 100
Ta [°C]
S-1165B50
5.1
5.08
5.06
5.04
5.02
5
4.98
4.96
4.94
4.92
4.9
-40 -20 0 20 40 60 80 100
Ta [°C]
(6) Current consumption vs. Input voltage
S-1165B15
40
35
30 25°C
25
20
15
10
5
0
0
40°C
85°C
24
VIN [V]
6
8
S-1165B50
40
35
30
25
20
15
10
5
00
25°C
85°C
24
VIN [V]
40°C
6
8
S-1165B30
3.1
3.05
3
2.95
2.9
- 40
-20
0
20 40 60 80 100
Ta [°C]
S-1165B30
40
35
30 25°C
25
20
15
10
5
00
40°C
85°C
24
VIN [V]
6
8
Seiko Instruments Inc.
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HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1165 Series
Rev.4.1_00
(7) Ripple rejection
S-1165B15 (Ta = 25°C)
VIN = 2.5 V, COUT = 2.2 μF
100
80
60
IOUT = 1 mA
40
20
0
10
30 mA
50 mA
100 1 k 10 k 100 k
Frequency [Hz]
1M
S-1165B50 (Ta = 25°C)
VIN = 6.0 V, COUT = 2.2 μF
100
80
60
IOUT = 1 mA
40
20
0
10
30 mA
50 mA
100 1 k 10 k
Frequency [Hz]
100 k
1M
S-1165B30 (Ta = 25°C)
VIN = 4.0 V, COUT = 2.2 μF
100
80
60
IOUT = 1 mA
40
20
0
10
30 mA
50 mA
100 1 k 10 k 100 k
Frequency [Hz]
1M
18 Seiko Instruments Inc.


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HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.4.1_00
S-1165 Series
Reference Data
(1) Input transient response characteristics
IOUT = 30 mA, tr = tf = 5.0 μs, COUT = 2.2 μF, CIN = 0 μF
3.1
3.08
6
5
3.06
4
3.04
VIN
VOUT
3
3.02
2
31
2.98
0
-10 0 10 20 30 40 50 60 70 80 90
t [μs]
(2) Load transient response characteristics
VIN = 4.0 V, COUT = 2.2 μF, CIN = 1.0 μF,
IOUT = 50 mA 100 mA
3.4 150
3.3 100
3.2 50
IOUT
3.1 0
3 -50
2.9
VOUT
-100
2.8 -150
-2 0 2 4 6 8 10 12 14 16 18
t [μs]
(3) ON/OFF pin transient response characteristics
S-1165B15 (Ta = 25°C)
VIN = 2.5 V, COUT = 2.2 μF, CIN = 1.0 μF
2.5 3
2
VON/OFF
2
1.5 1
1
VOUT
0
0.5 -1
0 -2
-0.5 -10 0 10 20 30 40 50 60 70 80 90 -3
t [μs]
S-1165B50 (Ta = 25°C)
VIN = 6.0 V, COUT = 2.2 μF, CIN = 1.0 μF
IOUT = 30 mA, tr = tf = 5.0 μs, COUT = 4.7 μF, CIN = 0 μF
3.1 6
3.08
5
3.06
3.04
VIN
VOUT
4
3
3.02
2
31
2.98 -10 0 10 20 30 40 50 60 70 80 90 0
t [μs]
VIN = 4.0 V, COUT = 4.7 μF, CIN = 1.0 μF,
IOUT = 50 mA 100 mA
3.4 150
3.3 100
3.2 50
IOUT
3.1 0
3 -50
2.9
VOUT
-100
2.8 -150
-2 0 2 4 6 8 10 12 14 16 18
t [μs]
S-1165B30 (Ta = 25°C)
VIN = 4.0 V, COUT = 2.2 μF, CIN = 1.0 μF
56
4
VON/OFF
3
4
2
20
VOUT
1 -2
0 -4
-1 -6
-10 0 10 20 30 40 50 60 70 80 90
t [μs]
7
6
5
4
3
2
1
0
-1 -10
0
VON/OFF
8
6
4
VOUT
2
0
-2
-4
-6
10 20 30 40 50 60 70 80 90 -8
t [μs]
Seiko Instruments Inc.
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2.9±0.2
1.9±0.2
54
123
0.95±0.1
0.4±0.1
0.16
+0.1
-0.06
No. MP005-A-P-SD-1.2
TITLE
No.
SCALE
UNIT
SOT235-A-PKG Dimensions
MP005-A-P-SD-1.2
mm
Seiko Instruments Inc.


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+0.1
ø1.5 -0
2.0±0.05
4.0±0.1(10 pitches:40.0±0.2)
0.25±0.1
ø1.0
+0.2
-0
4.0±0.1
3.2±0.2
1.4±0.2
321
45
Feed direction
No. MP005-A-C-SD-2.1
TITLE
No.
SCALE
UNIT
SOT235-A-Carrier Tape
MP005-A-C-SD-2.1
mm
Seiko Instruments Inc.


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12.5max.
Enlarged drawing in the central part
ø13±0.2
9.0±0.3
(60°) (60°)
No. MP005-A-R-SD-1.1
TITLE
No.
SCALE
UNIT
SOT235-A-Reel
MP005-A-R-SD-1.1
QTY.
3,000
mm
Seiko Instruments Inc.


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www.sii-ic.com
The information described herein is subject to change without notice.
Seiko Instruments Inc. is not responsible for any problems caused by circuits or diagrams described herein
whose related industrial properties, patents, or other rights belong to third parties. The application circuit
examples explain typical applications of the products, and do not guarantee the success of any specific
mass-production design.
When the products described herein are regulated products subject to the Wassenaar Arrangement or other
agreements, they may not be exported without authorization from the appropriate governmental authority.
Use of the information described herein for other purposes and/or reproduction or copying without the
express permission of Seiko Instruments Inc. is strictly prohibited.
The products described herein cannot be used as part of any device or equipment affecting the human
body, such as exercise equipment, medical equipment, security systems, gas equipment, vehicle equipment,
in-vehicle equipment, aviation equipment, aerospace equipment, and nuclear-related equipment, without prior
written permission of Seiko Instruments Inc.
The products described herein are not designed to be radiation-proof.
Although Seiko Instruments Inc. exerts the greatest possible effort to ensure high quality and reliability, the
failure or malfunction of semiconductor products may occur. The user of these products should therefore
give thorough consideration to safety design, including redundancy, fire-prevention measures, and
malfunction prevention, to prevent any accidents, fires, or community damage that may ensue.



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